100% satisfaction guarantee Immediately available after payment Both online and in PDF No strings attached
logo-home
Previously searched by you
Previously searched by you
logo
BCH403 PRACTICE TEST QUESTIONS WITH CERTIFIED ANSWERS $12.99
Add to cart
Quickly navigate to
Preview
  2.  
  3. BCH403
  4.  
  5. BCH403

Exam (elaborations)

BCH403 PRACTICE TEST QUESTIONS WITH CERTIFIED ANSWERS
 0 purchase
  • Course
  • BCH403
  • Institution
  • BCH403

BCH403 PRACTICE TEST QUESTIONS WITH CERTIFIED ANSWERS E1: Which of the following statements is true regarding the hydrophobic effect? - Answer-Non - Polar molecules are driven together in order to maximize the entropy of water. E1: The peptide in question 17 is dissolved into a solution that ha...

[Show more]

Preview 2 out of 15  pages

Document information

  • August 31, 2024
  • 15
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers

Subjects

  • bch403
  • bch403 practice test questions

Written for

  • BCH403
  • BCH403

Seller

avatar-seller
Perfectscorer

Reviews received

Content preview

BCH403 PRACTICE TEST QUESTIONS
WITH CERTIFIED ANSWERS

E1: Which of the following statements is true regarding the hydrophobic effect? -
Answer-Non - Polar molecules are driven together in order to maximize the entropy of
water.

E1: The peptide in question 17 is dissolved into a solution that has a pH of 6.5. Under
these conditions the net charge of the peptide is - Answer-+1

E1: A glycine residue is disruptive to the stability of an a-helix or a b-strand because: -
Answer-It's R-group is too small to participate in stabilizing interactions with neighboring
R - groups

E1: With a pKa of 6.37 the carbonic acid/bicarbonate system serves to buffer changes
to the pH of blood. The acid dissociates as follows:

H2CO3 + H20 <-> HCO3- + H30+

If a solution of 0.5M carbonic acid is adjusted to a pH of 2.5, the primary form of the
buffer will be: - Answer-H2CO3

E1: Most nonpolar residues are located on the interior of a protein fold, but are
occasionally found on surfaces where they can mediate protein interactions. The
molecular basis of a hypothetical infectious disease is that a bacterial protein interacts
with a human protein by sharing a nonpolar surface. Your goal as a researcher is to find
a way to disrupt this interaction. Which of the following surface mutations are most likely
to disrupt the protein interactions? - Answer-Leucine --> Glutamine

E1: You've discovered a new species of rodent living at a very high altitude, where the
partial pressure of oxygen is low. What would you predict regarding the oxygen binding
capacity of this new species? - Answer-B and D ( it's hemoglobin will have a very low
P50 value & the primary amino acid sequence of its hemoglobin will not be identical to
that of a species living in an oxygen rich atmosphere)

E1: the following peptide is composed of which amino acid sequence

[Picture of sequence. May insert later] - Answer-LKQIFKDIWTIGW

E1: The following sequence of 16 residues represents an Alpha helical stretch in an
enzyme from the bacterium that causes tuberculosis. which of the following is not true
regarding the structure of this Alpha Helix?

, QFLRDTANSLLDNLIT - Answer-Mutation from the phenylalanine residue to a proline
will prevent the rest of the sequence from forming an Alpha Helix.

E1: The residue sequence of a fibrous protein is shown below. which protein does this
sequence likely correspond to?

MGISQKLYRDVNNAFQSRINYWLS - Answer-fibroin

E1: Which of the following is true regarding oxygen binding to one molecule of
myoglobin? - Answer-B and C (A histidine is required to hydrogen bond with the bound
oxygen thus stabilizing it. & the iron atom is located outside the plane of the heme when
oxygen is not bound)

E1: A chromatography column was used to try to purify a protein that is 10 kilodaltons in
size. Some of the illusion fractions were run on SDS page and are shown below, with
the lower numbered fractions eluting first period based only on this information, what
kind of chromatographic column was used it was the attempt successful? The charges
on the gel are shown on the left.

[May insert picture later] - Answer-Nickel affinity, and it did work

E1: Your goal is to separate a mixture of the two polypeptides shown below, and obtain
purified peptide one for further study as a neurotransmitter. which purification technique
would be most effective and why?

Peptide 1: MHTRRAPLQAWKKPRADHVL
Peptide 2: MHTDEAPLQAWKDPEADHVLW - Answer-Cation exchange, since peptide 1
is more positively charged and will "stick" to that resin best.

E1: Ascorbate (Vitamin C) is an important part of any diet because: - Answer-It is
utilized by the enzyme lysyl oxidase, which crosslinks lysine residues to stabilize the
structure of tropocollagen.

E1: Why do proteins fold? - Answer-A and B are correct (It is entropically favorable for
water & It is enthalpically favorable for the protein)

E1: The structural changes in hemoglobin that contribute toward its positive
cooperativity for oxygen consist of: - Answer-All of the above ( movement of iron into the
plane of the heme & movement of a neighboring veiling residue due to strain from
changes in the heme & the breaking of a covalent bond with the regulatory molecule
BPG

E1: The following oxygen binding curves are derived from independent experiments.
which of the following statements is not true regarding these plots?

The benefits of buying summaries with Stuvia:

Guaranteed quality through customer reviews

Guaranteed quality through customer reviews

Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.

Quick and easy check-out

Quick and easy check-out

You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.

Focus on what matters

Focus on what matters

Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!

Frequently asked questions

What do I get when I buy this document?

You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.

Satisfaction guarantee: how does it work?

Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.

Who am I buying these notes from?

Stuvia is a marketplace, so you are not buying this document from us, but from seller Perfectscorer. Stuvia facilitates payment to the seller.

Will I be stuck with a subscription?

No, you only buy these notes for $12.99. You're not tied to anything after your purchase.

Can Stuvia be trusted?

4.6 stars on Google & Trustpilot (+1000 reviews)

64670 documents were sold in the last 30 days

Founded in 2010, the go-to place to buy study notes for 15 years now

Start selling

Recently viewed by you

Case ·

(0)

Retailmarketing - NCOI - cijfer 9 (incl. beoordeling)

Exam (elaborations) ·

(0)

AQA A-level FRENCH Paper 2 Writing June 2021 QP

Exam (elaborations) ·

(0)

Wetenschappelijke controverse_ 0,3 bonus behaald

Package deal ·

(0)

MNG2601 ASSIGNMENT 05 AND 06 SEMESTER 01 2023

Summary ·

(0)

Sales event samenvatting 1ste jaar volledig vak

Exam (elaborations) ·

(0)

REHS exam| 240 Questions| With COMPLETE Solutions

Exam (elaborations) ·

(0)

CPCU Virtual Exam Questions & Answers 2024/2025

Package deal ·

(0)

Kennislijn OP5/OP7: chronisch zieken (AFP & VPK)

Class notes ·

(0)

Aantekeningen colleges Forensische Victimologie
$12.99
  • (0)
Add to cart
Added